Carbureter.



C. F. SCHULZ.

GARBUBETER. 1 PLIGATION FILED AUG.21, 1911.

1,04@ l 1 L Patented Dec. 3, 1912.

CARL F. SCHULZ, v0F BEOKLYN, NEW YORK.

aanspannen.

Specification of Letters Patent.

Patented Dee. 3, raie.

Application lled August 21, 1911. Serial No. 645,099.-

To all wiz-om it may concern:

Be it known that I, CARL F. SCHULZ, citi-- loperated through the instrumentality of a lever fulcrumed intermediate of its ends within the carbureter casing.

The present i-nvention has for its primary object an improved construction oi' carbu-A reter of this character embodying means whereby the fulcrum pointof said lever may be shifted or adjusted in two dimensions so that such point may be varied, within certain limits in anydirection or to any desired position, while at the same time, no matter what the adj ustment may be, the fulcrum point is always in line with the pivots at the extremities of the lever.

The invention has for a further object mechanism of the character indicated in the preceding paragraph, so constructed and arranged that the two adjustments of the ful Crum point, that is, the adjustment toward and from either pivot point and in a direo tion substantially at right angles thereto, are absolutely independent of ea ch other.

The invention also has for an object mechanism ot' this character and for this purpose which is so constructed and arranged that the fulcrum point will be held in its adjusted position without any independent locking mechanism. And the invention further aims to generally improve this class of devices and to simplify them and to render them more useful. and commercially desirable.

YVith these and other objects in view as will more fully appear as the description proceeds, the invention consists incertain constructions, arrangements and combina-- tions of the parts that l shall hereinafter fullydeseribe and claim. j For a full understanding ol" the invention, reference is to be had to the Jfollowing description and accompanying` drawings, in which:

Figure 1 is a side elevation of a carbureter constructed in accordance with my invention Fim 2 is a vertical. sectional view thereof; Fig. 3 is a detail perspective;l view of onefot the actuating screws; and, ll" is a similar view of a fulcrum cari plate hereinafter speoilically described.

Corresponding and like -parts are referred to in the tolloiving description and indicated in all the views ot the drawings by the saine reference characters.

Referring to the drawing, the numeral l designates the casing of my improved earbureter, 2 the. mixture passage therein, inspirator' nozzle or fuel valve mounted in the primary portion of the mixture p' and 4 an air admission valve, "the lat er c ing provided with a 'rod movable within cylinder t3 in which a suspension spring`- '.1 is mounted, said spring being so connected to the rod 5 as to normally hold the air admission valve at the upper limit oit its meY ment. closing the air admission ports 8,

A lever Sl is pivotally connected at its ends to the uel valve 3 and air valve 4,'said lever being fulcrumed intermediate of its ends on a shiftable fulcrum l() which in the present instance is 'in the form of a pin projecting laterallyY from the inner face oi a plate 1l which is disposed on the outer side oi' casing l and which lies with a snug tit oi and upon au opening l2, of predeterminini size,`fo1u1ed in the side Wall of the cas' l. and comnnmicatingv with the air pass,

A bell crank lever Vlis fulcrumed at elbow, as at 14, on the outer side of the casingv l. the tulcrum point of said bell crank being coincident with the point of pir tal connection between the lever 9 and the air valve 4 when the latter is in closed position; but it is to be understood that the said tul` Crum and pivot point are entirely iudepenth entof each other. One arm ot' the lever lil, said arm being designated l5, is formed with a stem 16 on which a screwl is swivcled,bc ingl dctael ably held thereon b v a nut, as shown, and said screw Works throng:

threaded bore 15 which is formed in theplate il. whereby the turning of the screv.' will eii'eci the movement of the plate 1l longitudinally o't` said arm l5 and result in tln desired adjustment ot' the vtulcrum pin l0 of the lever 9 in one dimension.

The arm l5 of the bell crank i3 is mount.- ed between and in engagement with shoulders 1Q- that are vformed on an adjustment screw 2O which works within a threaded bearing Q1 formed on the casing l, so that by turning the screw 20, the bell crank 13 each other and the fulcrum remaining in adjusted position without the necessity of employing separate locking means therefor. -It

' will also be 'seen that, whateverthe adjustment, the tulcrum is always in line with the pivots at the extremities oi the lever 9.l In the present embodiment ot the. device, the lever 9 shifts with its tulcrum, the ends of said lever being inserted underneath and in engagement with rollers that are carried by pivot pins 22 and 23, carried by the air admission valve 4l and fuel valve 3, respectively. Preferably, a leaf spring 24 is secured to the underside of the lever 9, the two free ends of said spring serving to maintain-the lever always in contact with the pivots and for taking up wear.

25 designates alfinger which is in the present instance secured to thebearing 2l and which presses against the plate ll so as to hold the same against the opening 12 so as to avoid air leakage.

From the foregoing description in connection with the accompanying drawing, the operation of my improved carburetor and particularly the iiulcrum point adjusting means, will be apparent, the same having been described inconnection with the construction and relative arrangement of parts.

It is to be understood that while the accompanying drawing shows what I believe to be the preferred embodiment of my invention, the invention is not necessarily limited thereto as various changes may be made in the cnstruction, arrangement and proportions of the parts without departing from the scope of the invention as defined in the amended claims.

Having thus described the invention, what is claimed as new is:

1. A carbureter including an air valve, a fuel valve, and alever operatively connected to said valves and having its fulcrum relatively fixed with relation to the lever, said fulcrum and lever being shiftable in two dimensions.

2. A carbureter embodying an air valve, a fuel valve, and a lever operatively connect ed to said valves and 4vhaving a relative fixed fulcrum, said fulcrum and lever being shiftable with its fulcrum in two dimensions.

3. A- carburetor including an air valve, a fuel valve, a lever operatively connected to said valves and fulcrumed intermediate of its ends, the fulcrum of said lever being relatively fixed and means for moving the lever and fulcrum point in two dimensions and holding the same in adjusted position.

4. A carburetor including a casing, anair valve and a fuel valve in said casing, a lever interposed between said valves and fulcrumcd intermediate ot its ends, said fulcrum having a fixed relation to the lever, and means located on the outside of the casing for moving the fulcrurn point and said lever in vtwo dimensions.

5. A carbureter, including an air valve, a fuel valve, a lever fulc'rumed intermediate of its ends and operatively connected to said valves, a plate to' which the ulcrum of said lever is connected, a lever on which said plate is longitudinally adjusted, and ineans for moving said last named lever.V

6. A carbureter, including an air valve, a fuel valve, a casing in which the same are mounted, the casing being formed with an opening, a plate disposed against the casing at said opening and provided with a f ulf crum pin, a lever fulcrumed intermediateof; its ends on said pin, and operatively connected to said valves, a bell crank fulcrumed on the casing, said plate being longitudinally adjustable on one arm of said bell crank, and means connected to the other arm of said bell crank for shifting the latter,

T. A carbureter including an'air valve, a fuel valve, a casing in which said valves are mounted, the casing being formed with an opening, a plate applied to the side of the carbureter casing at said opening, a bell crank fulcrumed on said casing, an adjustment screw swiveled on one arm of said bell crank and working in said plate, an adjustment screw mounted on the casing and operatively engaging the other arm of said bell crank, the plate being provided with a fulcrum pin extending into the carburetor casing through said opening, and a lever tulcrulned on said pin and operatively connected to said valves.

8. A' carbureter ii'icluding a casing, provided vvith an air passage, air and fuel valves mounted in said casing, the casing being formed with an openingY entering said passa'ge,. a' plate applied to the carburetercasing over said opening and formed with a screw threaded bore, abell crank fulcrumed on the casing, an adjustment screw swiveled on one arm of said bell crank and working in the threaded bore of saidv plate, another adjustment screw Working on the casing andV operatively engaging the other arm of said bell crank, and a finger carried by the casing and pressing against said plate to hold its end on said pin and operatively connected to said valves, the fulcrum piri'of said lever being always maintained sub-- It Si il stantially in alinement with the pivot points between said lever and said valves, a bellcrank fulcrumed n the casing, said plate being longitudinally/ adjustable on one arm of said bell-crank, and means connected to the other arm of said. bell-crank for shifting the latter.

10. A oarbureter, including a casing formed with a primary air passage, a fuel valve mounted in said passage, the casing being formed with ports distinct from said p"mary air passage, an air admission valve mounted inthe casing and controlling said ports, a lever mounted in the casing and operatively7 connected to the fuel valve and air admission valve, said lever having a fulcrum relatively xedin relation to the lever and supporting the lever intermediate of its ends, said lever and its fulcrum being shift# able in two dimensions.

' ll. A carbureter, including a casing, fuel and air admission valves mounted therein, a lever mounted in the casing and operatively connected to 'said Valves, a plate provided with a fulerum pin on which saidA lever is being formedV With an ,opening receiving said pin, a bell-crank fulcrumetl on the casing at a pointco-incident with the pivot point between the lever and air admission valve in thel closed position vof the latter, said bellcrank fulerum and said pivot point being longitudinally adjustable on one arm of said bell-crank, and means connected to the other arm of said bell-crank for shifting the latter.

l2. A carbureter, including a casing, fuel and air admission valves mounted therein, a

lever pivotally connected to said valves` and i mountedl in the casing, a plate provided with l mensions.

a fulcrum pin on which said lever is fulcrumed intermediate of its ends, the cas/ing being formed. With an opening receiving said pin, a bell-crank fulcrumed to turn about a fixed axis on the casing, the platebeing lon? gitudinally adjustable on one arm of saidA relation to the lever, and means for shifting the lever and its fulcrum point in two di- 14. A carbureter including an air valve and a, fuel valve, a lever operatively connected to said valves andhaving a fulcrum fixed with relation to the ends 0f the lever, a movable plate to which the fulcrum of said lever is connected and by which the lever is supported, and meansfor moving mounted lntermediate of its ends, Pthe casing said plate into any position in the same plane.

l5. A carbureter including an air valve, a fuel valve, a lever operatively Connected to said valves and having a relatively fixed fulcrum, a movable plate to which the ful- 1 Crum of said lever is connected and whereby independent of each other, the plate being the fulcrum and the 'lever may be longitudinally7 shifted and a lever operatively7 connected to the plate for shifting the same.

In testimony whereof I afx my signature in presence of two witnesses.

CARL F. SCHULZ. [11. 5.] lVitnesses Y FRANK HieoiNs,

71am .mi LIVINGSTON. 

